i have a 86 tpi, and it was missing and ran like crap. i started replacing things, cap, rotor, control module. well the cap and rotor need to replaced anyways. but then i thought it was a air leak started looking for one could not fine one. so today i bought new plugs and cured every thing right up.

Thanks for your feedback..it's always good to hear the successes in the midst of all the problems....Scott